Add unit tests

Author: igoroctaviano

karma.conf.js

@@ -11,7 +11,7 @@ module.exports = function(config) {
 
     // frameworks to use
     // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
-    frameworks: ['mocha', 'chai'],
+    frameworks: ['jasmine'],
 
 
     // list of files / patterns to load in the browser

package-lock.json

@@ -34,18 +34,17 @@
   "devDependencies": {
     "@babel/core": "^7.1.0",
     "@babel/preset-env": "^7.1.0",
-    "chai": "^4.1.2",
     "eslint": "^5.16.0",
     "eslint-config-airbnb-base": "^13.1.0",
     "eslint-plugin-import": "^2.16.0",
     "karma": "^4.2.0",
     "karma-chai": "^0.1.0",
     "karma-chrome-launcher": "^2.2.0",
-    "karma-mocha": "^1.3.0",
-    "mocha": "^5.2.0",
+    "karma-jasmine": "^4.0.1",
     "prettier": "^1.16.4",
     "puppeteer": "^1.18.1",
     "rollup": "^0.63.2",
     "rollup-plugin-babel": "^4.0.3"
-  }
+  },
+  "dependencies": {}
 }

package.json

@@ -187,6 +187,7 @@ class DICOMwebClient {
       }
 
       if (requestInterceptors) { 
+        console.debug('yes')
         const metadata = { method, url };
         const pipeRequestInterceptors = functions => (args) => functions.reduce((args, fn) => fn(args, metadata), args);
         const pipedRequest = pipeRequestInterceptors(requestInterceptors);
@@ -212,7 +213,10 @@ class DICOMwebClient {
    * @private
    */
   _httpGet(url, headers, responseType, progressCallback) {
-    return this._httpRequest(url, "get", headers, { responseType, progressCallback });
+    return this._httpRequest(url, "get", headers, { 
+      responseType, 
+      progressCallback 
+    });
   }
 
   /**
@@ -648,7 +652,10 @@ class DICOMwebClient {
    * @returns {Promise} Response
    */
   _httpPost(url, headers, data, progressCallback) {
-    return this._httpRequest(url, "post", headers, { data, progressCallback });
+    return this._httpRequest(url, "post", headers, { 
+      data, 
+      progressCallback 
+    });
   }
 
   /**